What is PowerShell Core: Overview and Usage

PowerShell Core is the cross-platform, open-source version of PowerShell built on .NET Core, allowing you to run scripts on Windows, macOS, and Linux. It provides a modern, consistent command-line shell and scripting environment across different operating systems.

How It Works

PowerShell Core works like a universal remote control for your computer's tasks. Instead of being tied to just Windows, it uses a technology called .NET Core that runs on many operating systems. This means you can write one script and run it on Windows, macOS, or Linux without changing it.

Think of it as a tool that speaks the same language everywhere. It reads your commands, runs them, and gives you back results in a way that feels familiar no matter which computer you use. This makes automation and managing different systems easier and faster.

Example

This example shows how to get a list of running processes using PowerShell Core. It works the same on any supported system.

powershell

Get-Process | Select-Object -First 5 | Format-Table -AutoSize

Output

Handles  NPM(K)    PM(K)      WS(K)     CPU(s)     Id  ProcessName
-------  ------    -----      -----     ------     --  -----------
    123       10     15000      20000       0.03   1234  powershell
    234       15     25000      30000       0.10   2345  explorer
    345       20     35000      40000       0.20   3456  notepad
    456       12     18000      22000       0.05   4567  chrome
    567       18     28000      35000       0.15   5678  code

When to Use

Use PowerShell Core when you need to automate tasks across different operating systems with one consistent tool. It is perfect for system administrators managing mixed environments or developers who want to write scripts that work on Windows, macOS, and Linux.

For example, if you want to automate software installation, check system health, or manage cloud resources on multiple platforms, PowerShell Core lets you do all that without switching tools.

Key Points

• PowerShell Core is cross-platform and open-source.
• It runs on Windows, macOS, and Linux using .NET Core.
• It provides a consistent scripting experience everywhere.
• Ideal for automation in mixed operating system environments.

Key Takeaways

PowerShell Core is a cross-platform version of PowerShell built on .NET Core.

It allows running the same scripts on Windows, macOS, and Linux.

Use it to automate tasks across different operating systems easily.

It is open-source and regularly updated for modern scripting needs.